Blanc, Louis. “The Organisation of Labour, 1840,” found in Louis T. Moore, J. M. Burnam, and H. G. Hartmann, University of Cincinnati Studies 2.7 (1911) 15­16, 51­56.

Blunden, Andy. “Anti-Socialist Law,” Glossary of Marxism, http;www.marxist.org/ glossary [accessed November 1, 2009]

Braunthal, Julius. History of the International Volume II: 1914-1943. Frederick A. Praeger, Inc., 1967.

Chambers, Mortimer. The Western Experience 9th ed. Vol. II: Since the 16th Century. Boston: McGraw Hill, 2007.

Cole, G.D.H. A History of Socialist Thought Vol. III, Part I: The Second International 1889-1914. London: Macmillan & Co., 1960.

Engels, Friedrich. “The 23rd of June,” Marx and Engels Collected Works 7, 130.

-- “Details about the 23rd of June,” Marx and Engels Collected Works 7, 124.

Ledru-Rollin, Alexandre. “Speech to the Electors of Sarthe, 1841,” found in R. W. Postgate, Revolution from 1789 to 1906. (London: 1920), 187-189.
Lenin, Vladimir Illich. Two Tactics of Social-Democracy in the Democratic Revolution. Peking: Foreign Languages Press, 1965.

-- The Tasks of The Proletariat in our Revolution. London: Martin Lawrence, 1932.

Nettl, Peter. “The German Social Democratic Party 1890-1914 as a Political Model.” Past & Present 30 (April 1965) 65-95.

Moss, Bernard H. “Marx and Engels on French Social Democracy: Historians or Revolutionaries?” Journal of the History of Ideas 46.4 (Oct.-Dec., 1985) 539- 557.

Rossi, Ernest E. and McCrea, Barbara P. The European Political Dictionary. New York: ABC-CLIO, 1985.

Russell, Bertrand. German Social Democracy. New York: Simon and Schuster, 1965.

Quataert, Jean H. Reluctant Feminists In German Social Democracy, 1885-1917. Princeton: Princeton University Press, 1979.

Wilczunski, Jozef. Marxism, Socialism and Communism. London: The Macmillan Press, 1981.

-- “An Encyclopedic Dictionary of Marxism, Socialism, and Communism,” Walter de Gruyter (1981), 470.

“The Gotha and Erfurt Programs” Hanover Historical Texts Project. http://history.hanover.edu/courses/excerpts/111gotha.html

“German Social Democracy: The Erfurt Program.” Modern History Sourcebook. http://www.fordham.edu/halsall/mod/1891erfurt.html